The remnants of Hurricane “Sergio” deluged parts of Arizona on Oct 13, causing severe flash-flooding. The remnants of “Rosa” and “Sergio” combined have pushed Phoenix’s October rainfall total to record levels, just halfway through the month.
As of 17:00 MDT, Oct 13, Phoenix recorded 55.6 mm (2.19 inches) of rain so far for the day, and 135.1 mm (5.32 inches) so far for the month, making October 2018 Phoenix’s 4th wettest month ever and the wettest October on record.
The previous October record was 111.7 mm (4.4 inches) registered in 1972.
2018 is also now the wettest water year to date. The calendar year total is 221.4 mm (8.72 inches) which is 64.7 mm (2.55 inches) above normal.
Parts of west Phoenix saw more than 76.2 mm (3 inches), while South Mountain Park in Tempe reported 84 mm (3.31 inches).
Most areas measured 38.1 – 63.5 mm (1.5 to 2.5 inches) of rain.
The remnants of Hurricane “Rosa” kicked the month off by dumping 59.9 mm (2.36 inches) of rain on Phoenix on October 2.
COSMIC RAYS and CLOUD NUCLEATION
During solar minimum, the sun’s magnetic field weakens and the outward pressure of the solar wind decreases.
This allows more cosmic rays from deep space to penetrate the inner solar system and our planet’s atmosphere.
Solar minimum has returned, bringing with it extra Galactic Cosmic Rays.
The work of H. Svensmark, M.B. Enghoff, N. Shaviv and J. Svensmark attributes Cosmic Rays to cloud nucleation here on earth.
As well as more precipitation, increased cloud cover also exacts a cooling effect on the planet:
“Clouds are the Earth’s sunshade, and if cloud cover changes for any reason, you have global warming — or global cooling,” Dr. Roy Spencer.